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Hi Dave, after doing several test using ram #1 and #2 in MB slot #2 and #4 and vice versa.i have discovered ram #1 is the bad ram,I have yet to test it in MB slot #1 and #3(i need to remove my cpu coolerand turn it the other way if i want to test ram slot #1,i have the same cooler as you).And if there are no problem with the MB,should i go forth in exchanging the ram.

You can test the good RAM card in slot #3, this will tell you if the other memory channel is good.
Also if there is a memory controller problem.

Can you confirm this information?
Is the IMC voltage manually set to 1.2v and the DRAM at 1.6v?
DRAM Timing Mode set to 2N?

If the above information is correct, set the first four DRAM timings at 9-9-9-25 and leave the rest on auto, make sure the DRAM Timing Mode set to 2N.
Then run memtest86+ with the 'bad' RAM card in slot #2 or #4.

Hi Dave, yes i have set imc, dram voltage and ram timing according to what you have advised me.So now i have to try and set the dram timing to 9-9-9-24 and test the bad ram.i will let you know of the outcome, thanks.

Hi Dave, i had exchange my ram for new one that had been tested by their tech,will do memtest again soon.Now i have a question about reformating my hard drive,how do i go about doing so?and once i have reformatted my hard drive, should i install the bios version 1502 before or after os installation?i will let u know of the memtest outcome.

Be sure you need to flash your BIOS before attempting this, there is always a risk of a bad BIOS flash, this can leave your motherboard un-usable.

Your motherboard site lists the log for the 1502 BIOS update:

Quote:

Fix BIOS setup item "Intel(R) SpeedStep(TM) Tech" can't set to "Enable" if BCLK over than 149

Are you having issues with stepping?
Your snip on post #34 shows the Core Speed 2891.9 MHz, was your system at idle?
If your Core Speed is always the same as above, when at 160MHz bus speed, then this BIOS update would help you if you go back to 160MHz bus speed and want the stepping to work.

If you are not having this issue, then I would not recommend flashing your BIOS.

Your CPUZ snip on post #38 shows your bus speed at 133.7 X 9 = 1203.7MHz, this is indicating that your Stepping is working at that speed.

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